Exchanging nudes

So I know this group is for guys but I need a guys opinion and honesty on this:

I recently found 8 girls nudes on my husband phone. He claims that him & his buddy exchanged nudes of exes because he is bored of our sex life & told me I’m lousy in bed. There was also a video of a girl playing with herself.

He also added females to his snap to get at me.

And oh there’s nudes of 3 of his exes on his phone too…

He said he was going to delete them & today found out he never did…

I want to know why he did this? We have been married for 1 and half years, together almost 5 years and this isn’t the first time I’ve had issues with him. When we first got together he was snapping another girl behind my back but I didn’t found out till way later. Looking back now I should have left then but I was in love and young.

He also continues to like girls photos on Facebook, following girls around here on TikTok but says he doesn’t even talk to them (but has sent them TikTok’s)

I have voiced all my insecurities and concerns and when I do he wants to end the marriage and/or say it’s not him causing any insecurities, that’s it’s just all me and it’s how I treat him. Yet I cook, clean, take care of our child, go to nursing school, take care of his father, and work part time. While he just works.

I know this a lot but I need to lay it out all on the table and see if it’s really me.