What lightweight editing program can I use to bulk change default audio tracks and merge multiple videos into one? MKVToolNix is ​not suitable [closed]

Question

1. **Hello. I have many folders (each 1-40 GB) where there are many videos of different sizes .mp4 or .mkv.. What LIGHTWEIGHT video editing programs are there where I can upload a lot of videos and have everyone see 2 built-in tracks on the timeline, like in davinci resoulve, and be able to select and massively delete the default English tracks and put the translation track by default, and for everyone at the same time, and not 1 at a time, and then combine many videos into one video?

2. I inserted two tracks into Davinci resoulve, they are visible, but from such a large number of videos, it crashes during rendering, PREMIERE PRO and similar "heavy" programs are not suitable, they will also freeze, I need a lightweight program for video editing or conversion without loss of quality I rename the videos themselves in advance total commander group rename to 1.2.3.4... and move them to a separate folder so that it is consistent

3. I tried in shotcut, VSDS Video, filmora. clipify, openshot, Movavi Video Editor Plus do not insert the second necessary track on the timeline, but insert only the English track by default, in VSDS Video and Filmora you can only manually change tracks one video at a time when selecting all videos on the timeline, the track settings are not available. Via LosslessCut, gluing videos with track replacement is also not suitable, since it is only suitable if all videos are of the same resolution, I come across different resolutions, plus if you just replace the tracks, without merging it is impossible to configure so that you change it once and it changes for everyone, but you need to change it for each one

4. Also in MKVToolNix (MKVMerge) BAT script massively batch changed the default tracks, it works for a small number of files, but when checking a large number of large videos, it does not process some of the files, for example, out of 140 videos, only 99 were processed and similarly in other folders

   3. then combined the translated, processed in movavi. VSDS Video and shotcut thanks** enter image description here